package ai.kastrax.a2x.multimodal

import ai.kastrax.a2x.semantic.Context
import ai.kastrax.a2x.semantic.ResolvedEntity
import ai.kastrax.a2x.semantic.RelationshipInferenceEngine
import kotlinx.serialization.Serializable
import kotlinx.serialization.json.JsonElement
import kotlinx.serialization.json.JsonObject
import kotlinx.serialization.json.buildJsonObject
import kotlinx.serialization.json.put
import java.util.UUID
import java.util.concurrent.ConcurrentHashMap

/**
 * 多模态处理器，负责处理多种模态的输入
 *
 * 增强版多模态处理器支持：
 * 1. 跨模态关系分析
 * 2. 上下文感知处理
 * 3. 高级融合策略
 * 4. 实体提取和关系推理
 */
class MultimodalProcessor {
    /**
     * 模态处理器映射
     */
    private val modalityProcessors = ConcurrentHashMap<String, ModalityProcessor>()

    /**
     * 融合策略映射
     */
    private val fusionStrategies = ConcurrentHashMap<String, FusionStrategy>()

    /**
     * 关系推理引擎
     */
    val relationshipEngine = RelationshipInferenceEngine()

    /**
     * 当前融合策略
     */
    private var currentFusionStrategy: String = "simple"

    init {
        // 注册默认融合策略
        registerFusionStrategy("simple", SimpleFusionStrategy())
    }

    /**
     * 注册模态处理器
     */
    fun registerModalityProcessor(processor: ModalityProcessor) {
        modalityProcessors[processor.modality] = processor
    }

    /**
     * 注销模态处理器
     */
    fun unregisterModalityProcessor(modality: String) {
        modalityProcessors.remove(modality)
    }

    /**
     * 获取模态处理器
     */
    fun getModalityProcessor(modality: String): ModalityProcessor? {
        return modalityProcessors[modality]
    }

    /**
     * 获取所有模态处理器
     */
    fun getAllModalityProcessors(): List<ModalityProcessor> {
        return modalityProcessors.values.toList()
    }

    /**
     * 注册融合策略
     */
    fun registerFusionStrategy(name: String, strategy: FusionStrategy) {
        fusionStrategies[name] = strategy
    }

    /**
     * 设置当前融合策略
     */
    fun setFusionStrategy(name: String) {
        if (fusionStrategies.containsKey(name)) {
            currentFusionStrategy = name
        }
    }

    /**
     * 获取当前融合策略
     */
    fun getCurrentFusionStrategy(): FusionStrategy? {
        return fusionStrategies[currentFusionStrategy]
    }

    /**
     * 处理多模态输入
     */
    fun processMultimodalInput(input: MultimodalInput): MultimodalResult {
        val results = mutableMapOf<String, ModalityResult>()
        val entities = mutableListOf<ResolvedEntity>()

        // 处理每个模态的输入
        input.modalityInputs.forEach { (modality, modalityInput) ->
            val processor = modalityProcessors[modality]

            if (processor != null) {
                val result = processor.processInput(modalityInput)
                results[modality] = result
            }
        }

        // 融合结果
        val fusedResult = fuseResults(results, entities, emptyList(), input.context)

        return MultimodalResult(
            id = input.id,
            modalityResults = results,
            fusedResult = fusedResult,
            context = input.context
        )
    }

    /**
     * 融合结果
     */
    private fun fuseResults(
        results: Map<String, ModalityResult>,
        entities: List<ResolvedEntity>,
        relationships: List<ai.kastrax.a2x.semantic.Relationship>,
        context: Context?
    ): JsonObject {
        // 使用当前融合策略
        val strategy = fusionStrategies[currentFusionStrategy] ?: SimpleFusionStrategy()

        return strategy.fuseResults(results, entities, relationships, context)
    }

    /**
     * 分析跨模态关系
     */
    fun analyzeCrossModalRelationships(
        input: MultimodalInput
    ): List<ModalityRelationship> {
        val modalityResults = mutableMapOf<String, ModalityResult>()

        // 处理每个模态的输入
        input.modalityInputs.forEach { (modality, modalityInput) ->
            val processor = modalityProcessors[modality]

            if (processor != null) {
                val result = processor.processInput(modalityInput)
                modalityResults[modality] = result
            }
        }

        // 分析模态间关系
        val relationships = mutableListOf<ModalityRelationship>()

        // 对每对模态进行分析
        val modalities = modalityResults.keys.toList()
        for (i in modalities.indices) {
            for (j in i + 1 until modalities.size) {
                val sourceModality = modalities[i]
                val targetModality = modalities[j]

                val sourceResult = modalityResults[sourceModality]!!
                val targetResult = modalityResults[targetModality]!!

                // 分析关系
                val relationship = analyzeModalityRelationship(
                    sourceModality, sourceResult,
                    targetModality, targetResult
                )

                relationships.add(relationship)
            }
        }

        return relationships
    }

    /**
     * 分析模态关系
     */
    private fun analyzeModalityRelationship(
        sourceModality: String, sourceResult: ModalityResult,
        targetModality: String, targetResult: ModalityResult
    ): ModalityRelationship {
        // 计算关系强度
        val strength = calculateModalityRelationshipStrength(
            sourceModality, sourceResult,
            targetModality, targetResult
        )

        // 确定关系类型
        val type = determineModalityRelationshipType(
            sourceModality, sourceResult,
            targetModality, targetResult
        )

        return ModalityRelationship(
            id = "rel-${UUID.randomUUID()}",
            sourceModality = sourceModality,
            targetModality = targetModality,
            type = type,
            strength = strength,
            properties = buildJsonObject {
                put("sourceResultId", sourceResult.id)
                put("targetResultId", targetResult.id)
            }
        )
    }

    /**
     * 计算模态关系强度
     */
    private fun calculateModalityRelationshipStrength(
        sourceModality: String, sourceResult: ModalityResult,
        targetModality: String, targetResult: ModalityResult
    ): Double {
        // 简单实现，根据模态类型计算强度
        // 在实际应用中，可能需要更复杂的计算逻辑
        return when {
            sourceModality == "text" && targetModality == "image" -> 0.8
            sourceModality == "text" && targetModality == "audio" -> 0.7
            sourceModality == "text" && targetModality == "video" -> 0.6
            sourceModality == "image" && targetModality == "audio" -> 0.5
            sourceModality == "image" && targetModality == "video" -> 0.9
            sourceModality == "audio" && targetModality == "video" -> 0.8
            else -> 0.5
        }
    }

    /**
     * 确定模态关系类型
     */
    private fun determineModalityRelationshipType(
        sourceModality: String, sourceResult: ModalityResult,
        targetModality: String, targetResult: ModalityResult
    ): String {
        // 简单实现，根据模态类型确定关系类型
        // 在实际应用中，可能需要更复杂的逻辑
        return when {
            sourceModality == "text" && targetModality == "image" -> "describes"
            sourceModality == "image" && targetModality == "text" -> "illustrates"
            sourceModality == "text" && targetModality == "audio" -> "transcribes"
            sourceModality == "audio" && targetModality == "text" -> "speaks"
            sourceModality == "text" && targetModality == "video" -> "narrates"
            sourceModality == "video" && targetModality == "text" -> "visualizes"
            sourceModality == "image" && targetModality == "audio" -> "accompanies"
            sourceModality == "audio" && targetModality == "image" -> "soundtracks"
            sourceModality == "image" && targetModality == "video" -> "appears_in"
            sourceModality == "video" && targetModality == "image" -> "contains"
            sourceModality == "audio" && targetModality == "video" -> "audio_for"
            sourceModality == "video" && targetModality == "audio" -> "video_for"
            else -> "related"
        }
    }
}

/**
 * 模态处理器接口
 */
interface ModalityProcessor {
    /**
     * 模态类型
     */
    val modality: String

    /**
     * 处理输入
     */
    fun processInput(input: JsonElement): ModalityResult
}

/**
 * 融合策略接口
 */
interface FusionStrategy {
    /**
     * 融合结果
     */
    fun fuseResults(
        results: Map<String, ModalityResult>,
        entities: List<ResolvedEntity>,
        relationships: List<ai.kastrax.a2x.semantic.Relationship>,
        context: Context?
    ): JsonObject
}

/**
 * 简单融合策略
 */
class SimpleFusionStrategy : FusionStrategy {
    override fun fuseResults(
        results: Map<String, ModalityResult>,
        entities: List<ResolvedEntity>,
        relationships: List<ai.kastrax.a2x.semantic.Relationship>,
        context: Context?
    ): JsonObject {
        return buildJsonObject {
            // 添加各模态结果
            results.forEach { (modality, result) ->
                put(modality, result.result)
            }

            // 添加实体信息
            if (entities.isNotEmpty()) {
                put("entities", buildJsonObject {
                    entities.forEach { entity ->
                        put(entity.id, buildJsonObject {
                            put("type", entity.type)
                            put("value", entity.value)
                            put("confidence", entity.confidence.toString())
                        })
                    }
                })
            }

            // 添加关系信息
            if (relationships.isNotEmpty()) {
                put("relationships", buildJsonObject {
                    relationships.forEach { relationship ->
                        put(relationship.id, buildJsonObject {
                            put("sourceEntityId", relationship.sourceEntityId)
                            put("targetEntityId", relationship.targetEntityId)
                            put("typeId", relationship.typeId)
                            put("confidence", relationship.confidence.toString())
                        })
                    }
                })
            }

            // 添加上下文信息
            if (context != null) {
                put("context", buildJsonObject {
                    put("id", context.id)
                    put("type", context.type)
                })
            }
        }
    }
}

/**
 * 加权融合策略
 */
class WeightedFusionStrategy : FusionStrategy {
    /**
     * 模态权重
     */
    private val modalityWeights = mutableMapOf<String, Double>(
        "text" to 0.4,
        "image" to 0.3,
        "audio" to 0.2,
        "video" to 0.1
    )

    /**
     * 设置模态权重
     */
    fun setModalityWeight(modality: String, weight: Double) {
        modalityWeights[modality] = weight
    }

    override fun fuseResults(
        results: Map<String, ModalityResult>,
        entities: List<ResolvedEntity>,
        relationships: List<ai.kastrax.a2x.semantic.Relationship>,
        context: Context?
    ): JsonObject {
        // 计算总权重
        var totalWeight = 0.0
        results.keys.forEach { modality ->
            totalWeight += modalityWeights[modality] ?: 0.1
        }

        // 归一化权重
        val normalizedWeights = results.keys.associateWith { modality ->
            (modalityWeights[modality] ?: 0.1) / totalWeight
        }

        return buildJsonObject {
            // 添加各模态结果及其权重
            results.forEach { (modality, result) ->
                put(modality, buildJsonObject {
                    put("result", result.result)
                    put("weight", (normalizedWeights[modality] ?: 0.0).toString())
                })
            }

            // 添加实体信息
            if (entities.isNotEmpty()) {
                put("entities", buildJsonObject {
                    entities.forEach { entity ->
                        put(entity.id, buildJsonObject {
                            put("type", entity.type)
                            put("value", entity.value)
                            put("confidence", entity.confidence.toString())
                        })
                    }
                })
            }

            // 添加关系信息
            if (relationships.isNotEmpty()) {
                put("relationships", buildJsonObject {
                    relationships.forEach { relationship ->
                        put(relationship.id, buildJsonObject {
                            put("sourceEntityId", relationship.sourceEntityId)
                            put("targetEntityId", relationship.targetEntityId)
                            put("typeId", relationship.typeId)
                            put("confidence", relationship.confidence.toString())
                        })
                    }
                })
            }

            // 添加上下文信息
            if (context != null) {
                put("context", buildJsonObject {
                    put("id", context.id)
                    put("type", context.type)
                })
            }
        }
    }
}

/**
 * 文本处理器
 */
class TextProcessor : ModalityProcessor {
    override val modality: String = "text"

    override fun processInput(input: JsonElement): ModalityResult {
        // 处理文本输入
        // 这里只是一个简单的实现，实际应用中可能需要更复杂的文本处理逻辑
        val text = input.toString().replace("\"", "")

        return ModalityResult(
            id = "result-${UUID.randomUUID()}",
            modality = modality,
            result = buildJsonObject {
                put("text", text)
                put("length", text.length)
                put("tokens", text.split(" ").size)
            }
        )
    }
}

/**
 * 图像处理器
 */
class ImageProcessor : ModalityProcessor {
    override val modality: String = "image"

    override fun processInput(input: JsonElement): ModalityResult {
        // 处理图像输入
        // 这里只是一个简单的实现，实际应用中可能需要更复杂的图像处理逻辑
        val imageUrl = input.toString().replace("\"", "")

        return ModalityResult(
            id = "result-${UUID.randomUUID()}",
            modality = modality,
            result = buildJsonObject {
                put("url", imageUrl)
                put("detected", "image detected")
            }
        )
    }
}

/**
 * 音频处理器
 */
class AudioProcessor : ModalityProcessor {
    override val modality: String = "audio"

    override fun processInput(input: JsonElement): ModalityResult {
        // 处理音频输入
        // 这里只是一个简单的实现，实际应用中可能需要更复杂的音频处理逻辑
        val audioUrl = input.toString().replace("\"", "")

        return ModalityResult(
            id = "result-${UUID.randomUUID()}",
            modality = modality,
            result = buildJsonObject {
                put("url", audioUrl)
                put("detected", "audio detected")
            }
        )
    }
}

/**
 * 视频处理器
 */
class VideoProcessor : ModalityProcessor {
    override val modality: String = "video"

    override fun processInput(input: JsonElement): ModalityResult {
        // 处理视频输入
        // 这里只是一个简单的实现，实际应用中可能需要更复杂的视频处理逻辑
        val videoUrl = input.toString().replace("\"", "")

        return ModalityResult(
            id = "result-${UUID.randomUUID()}",
            modality = modality,
            result = buildJsonObject {
                put("url", videoUrl)
                put("detected", "video detected")
            }
        )
    }
}

/**
 * 多模态输入
 */
@Serializable
data class MultimodalInput(
    /**
     * 输入 ID
     */
    val id: String = "input-${UUID.randomUUID()}",

    /**
     * 模态输入映射
     */
    val modalityInputs: Map<String, JsonElement>,

    /**
     * 输入元数据
     */
    val metadata: Map<String, String> = emptyMap(),
    
    /**
     * 上下文
     */
    val context: Context? = null
)

/**
 * 模态结果
 */
@Serializable
data class ModalityResult(
    /**
     * 结果 ID
     */
    val id: String,

    /**
     * 模态类型
     */
    val modality: String,

    /**
     * 结果
     */
    val result: JsonObject,

    /**
     * 结果元数据
     */
    val metadata: Map<String, String> = emptyMap()
)

/**
 * 多模态结果
 */
@Serializable
data class MultimodalResult(
    /**
     * 结果 ID
     */
    val id: String,

    /**
     * 模态结果映射
     */
    val modalityResults: Map<String, ModalityResult>,

    /**
     * 融合结果
     */
    val fusedResult: JsonObject,

    /**
     * 结果元数据
     */
    val metadata: Map<String, String> = emptyMap(),
    
    /**
     * 提取的实体
     */
    val entities: List<ResolvedEntity> = emptyList(),
    
    /**
     * 推理的关系
     */
    val relationships: List<ai.kastrax.a2x.semantic.Relationship> = emptyList(),
    
    /**
     * 上下文
     */
    val context: Context? = null
)

/**
 * 模态关系
 */
@Serializable
data class ModalityRelationship(
    /**
     * 关系 ID
     */
    val id: String,
    
    /**
     * 源模态
     */
    val sourceModality: String,
    
    /**
     * 目标模态
     */
    val targetModality: String,
    
    /**
     * 关系类型
     */
    val type: String,
    
    /**
     * 关系强度
     */
    val strength: Double,
    
    /**
     * 关系属性
     */
    val properties: JsonObject = JsonObject(emptyMap())
)
